Home / 786,087.80-1,179,380.93-280,637.94

Finding the Fourth Proportional to 786,087.80, 1,179,380.93 and 280,637.94

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Solution

The fourth proportional to 786,087.80, 1,179,380.93 and 280,637.94 is: 421,045.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,087.80 : 1,179,380.93 = 280,637.94 : x
  2. Step 2: Convert to fraction form
    786,087.80/1,179,380.93 = 280,637.94/x
  3. Step 3: Cross multiply
    786,087.80x = 1,179,380.93 × 280,637.94
  4. Step 4: Simplify right side
    786,087.80x = 330,979,037,689.97
  5. Step 5: Solve for x
    x = 330,979,037,689.97/786,087.80
  6. Step 6: Final answer
    x = 421,045.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.